Nelly Carreno and "Normal" Temperature

An interesting graph from NECN weather with "normal" temperature a flat line at 45 degrees. Thanks to the wonderful internet I was able to send the following note to Nelly

"Dear Nelly, I enjoy viewing you efforts on informing the public of the current weather predictions. However, I would like to point out a small technical mistake that perhaps you are unaware. Please be more careful when using the terms "average" and "normal" and avoid saying temperatures are above or below normal unless they are far away from the standard deviation for that time of year.
Let me know if this makes sense to you,
Thanks!"

While she never replied to my message, so far she has not said "Highs a few degrees above normal" again since I sent it. Thanks so much Nelly!

References:

What is "normal temperature"